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Finding the Fourth Proportional to 328,956, 453,985.66 and 261,529.42

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Solution

The fourth proportional to 328,956, 453,985.66 and 261,529.42 is: 360,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,956 : 453,985.66 = 261,529.42 : x
  2. Step 2: Convert to fraction form
    328,956/453,985.66 = 261,529.42/x
  3. Step 3: Cross multiply
    328,956x = 453,985.66 × 261,529.42
  4. Step 4: Simplify right side
    328,956x = 118,730,606,348.12
  5. Step 5: Solve for x
    x = 118,730,606,348.12/328,956
  6. Step 6: Final answer
    x = 360,931.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.